tercosvstuercasWhat's the difference?

Quick tell: tercos is a adjective, tuercas is a noun, so they fill different roles in a sentence.

Which to use

“tercos” is an adjective and “tuercas” is a noun - they look or sound alike but fill different roles in a sentence.

#48,727
“tercos” frequency rank
#34,820
“tuercas” frequency rank
83547
confusion score

Side-by-Side Comparison

Feature tercos tuercas
Definition Forma del plural de terco. Forma del plural de tuerca.

Where the eye mixes tercos and tuercas

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. tercos runs 6 letters (CVCCVC) against tuercas's 7 (CVVCCVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
tercos
7 ch
tuercas

Why the eye confuses tercos with tuercas

These two trip readers on the page rather than in the ear: tercos is [ˈt̪eɾkos] while tuercas is [ˈt̪weɾkas]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 83547, derived from the frequency rank of both members and their visual similarity.

tercos is recorded at frequency rank #48,727, classified as anadj, pronounced [ˈt̪eɾkos]. tuercas is at rank #34,820, tagged as anoun, pronounced [ˈt̪weɾkas].

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 83547, this pair ranks #8,018 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of tercos vs tuercas

Shared letters: cerst. Private to "tercos": o. Private to "tuercas": au.

"tercos" · 6 letters · shape CVCCVC  ·  "tuercas" · 7 letters · shape CVVCCVC

Known mistypes of this pair

  • tercos ← etrcos · tecros · terccos · tercoss · tercso · terocs · terrcos · trecos
  • tuercas ← teurcas · ttuercas · tuecras · tueracs · tuercass · tuerccas · tuercsa · tuerrcas

Frequently Asked Questions

Can "tercos" and "tuercas" be used interchangeably?
No - they are not even the same part of speech. "tercos" is an adjective and "tuercas" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "tercos" or "tuercas" show up more?
"tuercas" is the more common of the two: it sits at frequency rank #34,820 in our Spanish list, against #48,727 for "tercos". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "tercos" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "tuercas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #8,018 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "tercos" and "tuercas" also get mixed up with nearby pairs, the highest-scored neighbour is "tercos vs termos". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #8,018 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list